急急 Symbol not found: __dealloc 错误

今天遇到
dyld: Symbol not found: __dealloc
Referenced from: /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
Expected in: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.1.sdk/usr/lib/libobjc.A.dylib
in /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
两天了没有解决 求助

http://www.cocoachina.com/bbs/read.php?tid=270210

楼主 是添加了什么功能之后出现的这种情况?

其实这个一般因为其他上下文的错误,附近看一看,是不是少做了什么

开启隐藏文件夹,进入“资源库/Developer/Xcode/DerivedData”,删除相关工程项目的文件夹